Analysis of Characteristic of Dissolved and Colloidal Substances in Poplar APMP
(0) White water in papermaking systems can contain many Dissolved and Colloidal Substances(DCS).With the recycling of white water,DCS will accumulate in the papermaking system,resulting in serious deposit problems on papermaking equipments,and product qualities are likely to be suffered.In this paper,the physicochemical properties of DCS from poplar alkaline peroxide mechanical pulp(APMP)were studied.The dissolved substances(DS)and colloidal substances(CS)in the DCS have different contributions to the DCS properties.The results showed that the DS contributed as much as 77％ to the total DCS,while the CS only contributed to the other 23％.It is obvious that the carbohydrates in the DCS are much more than the lipophilic resin substances.But the cationic demand (CD)of CS was higher than DS,so the main contributor to the CD was from CS which is composed of more anionic substances.The conductivity of the DS was quite similar to that of the DCS,indicating DS had a key effect on the DCS conductivity.The DCS was determined by GC-MS(Gas Chromatography-Mass Spectrum)qualitatively,and three compounds of the resin acid components,seven compounds of the fatty acid components,seven compounds of the saccharide components and two compounds of the indicans components were identified in DCS.
APMP dissolved and colloidal substances GC-MS
LIU CHAO QIN MENGHUA LI ZONGQUAN
Key Lab of Paper Science and Technology of Ministry of Education,Shandong Institute of Light Industry,Shandong Jinan,250353,China
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
676-678
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）